Irregular verbs

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Across
  1. 2. won
  2. 5. grew
  3. 6. laid
  4. 7. burst
  5. 9. shone
  6. 10. freeze
  7. 11. split
  8. 13. forbade
  9. 15. woken
  10. 16. flown
  11. 18. dug
Down
  1. 1. rang
  2. 3. swear
  3. 4. risen
  4. 8. strike
  5. 9. swept
  6. 11. swum
  7. 12. thrown
  8. 14. drew
  9. 17. led